Pilot/short drilling 3 x d
with additional countersink of 90°

CrazyDrill Coolpilot Titanium ATC, the solid carbide drill bit (pilot or short drill and countersink drill bit), forms a well-coordinated program with the CrazyDrill Cool Titanium ATC deep hole drill. The base for precise drilling and stable machining is provided by the pilot drilling with CrazyDrill Coolpilot Titanium or, on inclined surfaces, using CrazyDrill Crosspilot. The pilot drill ensures a high position accuracy due to its short and sturdy construction. The pilot hole is the guidance for the subsequent drill to guide it cylindrically and guarantee the straightness and perpendicularity of the deep hole.

The quality of the drilling (no measurable transition from pilot hole size to follow-up deep hole size) as well as the stable machining process (no jamming) are guaranteed by means of a predetermined tool tolerance. As well as making short bore holes quickly and easily, CrazyDrill Coolpilot Titanium is also a perfect solution for drilling short holes quickly and accurately up to a drilling depth of 3 x d with 90° chamfer.

Tolerance of pilot drill CrazyDrill Coolpilot Titanium ATC (m5):
≤ 3 mm (.118”): + 0.002 mm /+ 0.006 mm (+.00008” /+ .00024”)
≤ 6.35 mm (.250”): + 0.004 mm /+ 0.009 mm (+.00016” /+ .0004”)

Tolerance of pilot drill CrazyDrill Crosspilot (inclined surfaces) (k6):
≤ 3 mm (.118”): + 0 mm /+ 0.006 mm (+ 0” /+ .00024”)
≤ 6.35 mm (.250”): + 0.001 mm /+ 0.009 mm (+ .00004” /+ .0004”)

Tolerance of follow-up drill CrazyDrill Cool Titanium ATC (k5):
≤ 3 mm (.118”): + 0 mm /+ 0.004 mm (+ 0” /+ 00016”)
≤ 6.35 mm (.250”): + 0.001 mm /+ 0.006 mm (+ .00004” /+ .00024”)

General information

In the industry of metal work tools, shorter processing times are always in high demand. At the same time, the requirements to the manufacturing precision and the process reliability are extremely high. In order to fulfill these requirements, the "machine tool – spindle – tool – tool holder" system need to be considered as a whole (see additional info).

For the use of the types of drill bits CrazyDrill Coolpilot Titanium ATC, Mikron Tool has defined a fast and process-reliable procedure which achieves optimum  drilling results.

Quick short drilling up to 3 x d and 90° chamfer or pilot drilling:

1. Pilot drilling or short drilling up to 3 x d in one step

Drilling up to 3 x d with CrazyDrill Coolpilot Titanium ATC in one step (see cutting data chart):

• CrazyDrill Coolpilot Titanium ATC
  1. Turn on internal cooling
  2. Drill in one step with recommended drilling speed and feed (see cutting data chart)
  3. If requested, a countersink of 90° can be placed after the maximum drilling depth of 3 x d has been reached.

Note:

After the drill has reached the desired cutting depth, rapid return to the safe position.

Mikron Tool has determined the ideal cutting parameters (drilling speed to tool life ratio and process reliability) when using CrazyDrill Coolpilot Titanium. These are listed in the cutting data tables according to drill diameter, drilling depth and material to be machined. The detailed cutting data tested by Mikron Tool, such as cutting speed vc, feed rate f and drilling impact Q, permit a quick and secure machining.

The overview of the cutting values table according to material group, material type, hardness degree and tensile strength, material number, DIN and AISI/ASTM/UNS permits quick determination of the parameters to be used.

An impact-resistant and user-friendly drill packaging is absolutely necessary for CrazyDrill Coolpilot Titanium. Mikron Tool offers all tools of the CrazyDrill Cool Titanium family in a high quality, single package.

Please find more information about tool holders, cooling or lubrication under “Additional Info”.

Mikron Tool has an international team of cutting technology experts who are pleased to answer your questions (how to use a drill, tools, machines, tool holders, cooling, machining process…).

Use this link to contact us directly.